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| File information | |
| Filename: | us0d0003515-001.jpg |
| Keywords: | Pittsburgh / Allegheny / Pennsylvania / F. E. Marshall / William B. Hunter |
| Inventor's Name: | Annie W. Henderson |
| Patent Date: | June 1, 1869 |
| Pattern Name/Number: | Unknown |
| Original Manufacturer: | Unknown |
| Date added: | Apr 19, 2019 |